Safety outlet valve for tank cars



g f 2 G m .7. A w WM T 4 E m I. I.IV/ 7 SAFETY OUTLET VALVE FOR TANKCARS V11 l gli Nov 20, 1928 Patented Nov. 20, 1928.

U N I T ED l ST AlT ESl PATEN OF @F1 ,CE1

FREDERIC A. GURNEY, 0F WORCESTER', 'MASSACHUSETTS SAFETY OUTLET VALVEVFOR 'TANK CARS.

Appli'zationv led August- 22, -1927"S.erial.v No'. 214.567.

as a means for controlling-the outlet and will not get displaced oropened during the travel of the' car on theV road; to provide the valvein such position that there Will be l]ust as much clearance as has `been'the .caserheretofora and to insure the valve. againstaccidentalropening in transit.

Other objects andadvantages ofthe invention will appear hereinafter. Y

Reference is to be had to the accompany` ing drawings in which i Fig. 1is a central sectional viewy of an outlet valve casing for a tank caryWith a preferred embodiment of ,this vinvention applied thereto; and

Fig; 2 is a central sectionalvieiv on'the line 2-2 of Fig. 1.

It hasbeen customary heretofore to provide tank cars with anoutletlvalve casing 10 extendingdown. materially 'from the bottom of thecar to which it is secured and to provide the bottomof the casing With acap screwed on the threads 11 thereof. At the top this casing has beenusually provided With an inside valve (not shown) which is supposed tocontrol the discharge of oil but Which becomes displaced owing to thevibrations in transit and allows the oil to leak out. The cap at thebottom Which has 'usually been used is intended to prevent loss of oilalong the road, but leakage occurs and furthermore, when this cap isremoved to empty the car, the oil in the casing is lost Which, in theaggregate, is an important loss. The object-s of this invention havebeen stated above and more specifically they relate to the provision ofa substitute cap having means for preventing the discharge of the Wholecasing full of oil when the plug in the bottom is removed and thatWithout any increase in the g depth of the cap and therefore providingt-he usual clearance.

For this purpose I place on the thread 1 1 a cap 12 Which is providedwith an outlet plug 13 at the bottom as usual. `This cap is providedivith a passage therethrough into which lit two side plugs 14 and 15.The plug 15 is provided with a squared end 16 by which the plug can beremoved. The plug 14, although removable, is not ordinarily removed inthe course of its life. It is provided With arecess 17 for receiving-aspring 18 bearing on a head 19 located inthe end of a conical valve- 20.This conical valve is located in a coniH lcal seat which is a part oflthe passage` through the cap12 mentioned above It has one or more yports21 through it kwhich canibe turned to horizontaler vertical position asusualffor shutting off the oil or `allowing it to pass through. It has asquare head Q2 located in'a recess in the plug 15 bywhich the valvecanbe turned. V

In order to open or close the valve the plug 15 has to beremoved and thevalve .turned by this squarehead 22, which is ladapted to re-LV ceiveaWrench for that purpose. ItWill be seen that the spring 18 constantlyforcesthc conicalvalve to its seat so that the yibrations of travel willnotvallowoilto leak by atthis point, although the inside` valve at the,top

mayv be leaking. l Furthermore, 'there .is a

cavity 24 inthe cap 12, through which this valve 2OA passes. This is ,racomparatively small cavity and, if .the valve does leak, the, only oilthat Willbelostfwhen the plug 13 is f removed, is that contained in thecavity 24 below the valve. This is a very much smaller loss than that ofthe Whole casing 10 full of oil as often has been the case heretofore.

This device therefore is acceptacle to the trade because it does not doaway with any of the safety features now employed and there is no lessclearance under it than is the case with the usual cap. Furthermore, thevalve 20 is kept to its seat so that there is no leakage in ordinarycircumstances and, even if there is, there cannot be much. waste from itasv has been shown above. It does not involve the changing ordisplacement of the usual outlet valve casing 10 and therefore does notinvolve an increase in the expenditure for t-he principal part of thedevice as it is manufactured. It is a practical and simple device,saving large quantities of oil in the aggreate.

Although rI have illustrated and described only a single form of theinvention, I am 'aware of the fact that modifications can be madetherein by any person skilled in the art without departing from thescope of the invention as expressed in the claims. There fore, I do notWish to be limited to all the details of construction herein shown anddescribed, but What I do claim is 1. The combination with an outletvalve casing for a tank car, of a cap secured to the bottom of ,saidcasing and having an outlet lu@ said ca) havinO` a transverse conical b3b I assaffe therethrou `h closel ad acent said C c l lue a conica-lvalve located in said assaOe a plug screwing into the side of the capand c the bottom of the car, or' a cap secured on the bottom of saidcasino' and havine a valve located transversely oi' said cap lornormally preventing the leakage of the oil through said casing, anoutlet plug in the bottomoit said casing and projecting therewithin to apoint closely adjacent said valve, said valve having a non-circular end,and a plug removably mounted in the side or the cap and adapted to beunscrewed to expose the non-circular end for turning the valve.

3. Tlie'combination with an outlet valve casing tor a tank car, of a capscrewed to the bottomof said casingan'd having an outlet plug at thebottom, said cap having a conical passage therein closely adjacent saidplug, ot' a conical valve located in said passage horizontally, a plugscrewing into the'side or the cap and having a recess, aspringprojecting into said recess and engaging the large end of theconical valve for holding the'valve against its seat, said valve havinga non-circular smaller end, and a plug removably mountlow said valve.

ed in the side of the casing and adapted to he unscrewed to expose thenon-circular end.

In a valve, the combination with an open `endedA casing having a.transverse conical pas sage therein, of a conical valve located in saidpassage, a plug -screwing Vinto the side of the casing and having arecess, a spring projecting into said recess and engaging the large endof the conical valve :tor holding the valve against its seat, said valvehaving a non-circular smaller end, anda plug removably mounted in theside or the casing and adapted to he iinscrewed to expose thenon-circular end, and means to ill the portion or the casing'belowv saidvalve.

5. The combination with an outlet valve casing for a tank car, oiI a capscrewed to the bottom ot' `said casing, said cap having a transverseconical passage therein, of a conical valve located in lsaid passage, aplugscrewing'into the side of the cap and having a recess, a springprojecting into said recess and engaging the large end of the conicalvalve for holding said valve againstits seat, said valve having anon-circular smaller end, and a plug removably nioiintedin the side ofthe casing and adapted to be unscrewedto expose the lion-circular end,and means to block substantially all ofthe portion of the casing bentestimony whereof l have hereunto afhxed my signature.

FREDERIC ii. siiaiiniiv

